Pediatrics – Common nutritional deficiency diseases Deficiencies Osteoporosis. Rickets. Tetany. Iodine deficiency. Goiter. Selenium deficiency. Keshan disease. Iron deficiency. Iron deficiency anemia. Growth retardation. Thiamine (Vitamin B1) Beriberi. Niacin (Vitamin B3) Pellagra. Vitamin C. Scurvy. Nutritional disease, any of the nutrient-related diseases and conditions that cause illness in humans. They may include deficiencies or excesses in the diet, obesity and eating disorders, and chronic diseases […]